Translation:I love you. You are a wonderful man.
I insist, while adding "human" is correct and informative, it is cumbersome. It is much more elegant to say "you are a wonderful being", and unlike what Robin thinks, definitely not out of this world. I have said it before and heard it said about others, we were all perfectly understood. Just because you do not use it or it sounds strange to you does not mean it does not exist!
Do a Google search with the quotes around the sentence. It turns up a nauseating amount of religious and romantic references. Including some books, blogs, self help, astrology, coaching, poetry... So while I would agree the phrase is not necessarily very common, it is elegant, and used in proper English frequently enough.
Google trends shows some low level activity of people searching for the whole phrase.
While https://www.english-corpora.org/coha/ for example shows few relevant matches, the most recent match illustrates the way I would use the phrase:
1 2006 NEWS Houston A B C she knows is that she's getting the warmth and love and attention of this wonderful being called mom. " Among women serving sentences of more than a decade,
And another 3 relevant matches from https://www.english-corpora.org/now/
3 16-11-17 GB VICE A B C # Affirmation: I treat myself with love and kindness, because I am a wonderful being who deserves only the best and deserves to be happy. # Response:
4 16-08-22 GB The Independent A B C , I'm very happy with it. It shows people are remembering what a wonderful being he was, " he said. " The ones that are mocking and
5 14-03-25 GB HelpAge International A B C # It is heartbreaking. Paco was a close friend, a colleague. A wonderful being and I feel so sad that he is gone. It is hard to